Turbogenerator



w. F. BOUCH AND 5.1. BLAKE.

TURBOGENERATQR.

APPLICATION FILED OCT. 30, 1918. 1,420,076,

2 SHEETSMSHEET l.

Patented June 20, 1922a w. F. BOUCH AND 5.1. BLAKE.

lTURBOGENERATOR. APPLICATION FILED OCT. 30, 1918.

Patented June 20, 1922.

2 SHEETS-SHEET 2.

` I uNlrraI):v STATI-1 5 PATE-NT oFFIca.

WILLIAII r. Bauamt, OF LANCASTER., ANDELI J. BLAIIE, OF BUFFALO, NEW YORK," AssIGNOIzs 'ro GOU-LD cOUrLEIt COMPANY, A CORPORATION or NEW You.

TUIaOGENImATOR.

` useful Improvements in Turbogenerators,

of which the following is aspecication.

This invention relates toa mechanical construction and particularly to a construction in which. threer units are combined or assembled on a common shaft having only two points of'support of bearings.

j 3. Keyed to the shaft 1 is a rotor 4 of amagnetO-generator. On one end of the shaft .-1 is mounted a turbinerunner` 5' and on the otherl end of the shaft 1 is mounted a govf More particularly the invention relates to the construction 'of a turbo-generator for locomotive headlights land the units are a turbine, yagenerator and a governor for the turbine.

Itlwas our object lto design a machine of this character of small size, compact arrangement andl comparatively inexpensive construction, and one in which the alignment could be easiest secured, and which machine could vbe readily applied -to a locomotive. The machine illustrated and described below is the outcome of our efforts to the ends above indicated. The preferred form of machine which we have designed is shown in thel accompanying drawings, and in whichf f g Fig. I1 shows a longitudinal section.

Fig. 2 shows a three-quarter sectionon line y2---2 of Fig..1 and a quarter view on line F--EofFig l, and

a section on line 3 3 of Fig. 3 shows Fig. V2.

Referring to the drawings, it will be ,seen

that the shaft 1 is mounted in bearings 2 and ernor 6 for the 'turbina The bearings forthe shafftanay be of and well known construction, but as shown, lare l-ball-bearings. One part 7 of the bea'rin'g 2 is placed on the shaft. 1 and aring' 8 is screwed on the shaft, which is threaded, so as to force the part 7 firmlyv against the'shoulder specification of Lettere Patent.

Patented June 20, 1922.

Application led October 30, 1918. Serial No. 260,286.

9 `on the shaft. The ring 8 is held in place by a Cotter-pin 10 or other suitable means.

The other bearing 3 has a similar part 11 on the shaft and this part 11 isheld in place against t e shoulder 12 by the member 13 of the overnor which is screwed onto the shaft andield in place by taper-pin 14.

The other part of each of the bearings is supported by frame members 15 and 16,

which members' also constitute the lends of 1the generator. Attached to the ends 15 and 16 is a cylindrical body member 17. yThis member is made of non-magnetic material.

This member 17 has near its ends two integral upstanding flanges 18 and directly underneath the upstandlng flange at one end is a flange I19 extending inwardly. Mounted vin this member 17 are two pole pieces 20. These pole pieces are made up in the usual manner from steel laminations. Each of these 'poles' is held in place by two rods 21 extending therethrough. Onev end'of each of the rods passes through` ,the inwardly extending f flange 19 andthe other passes through a non-magnetic ring 22 which is similar in shape to they flange 19` and which ring .is pressed into lace snugly inside the member 17 after the aininationsv have been put into position. lThe ends of the rods are riveted so as to securely hold them in place. Each ofthe poles 2O hasa projection-23 which extends out through an elongated opening in the member 1.7.- These projections extend outwardly substantially to the periphery of the upstanding flanges 18. In the machine illustrated the projections are diametrically opposite each vother and their sides beingstraight are, substantially parallel to eachl other. g

Permanent steel magnets 24 are placed outside the member 17 and within the periphery of the upstandingA flangesL 18 and with their ends firmly against the projections 23f6f the poles. These magnets are also attached tofthe member 17 preferably at their middle point by means of screws25. The screws are counter-sunk and the parts ,are so arranged that when the ends ofthe magnets engage the pole projections there is a slight space between the member 17 and the middle part of the magnets so that in tightening the` screws 25 the magnets are placedv under `compression, thereby' firmly pressin their ends against,` the pole progections. 1n the machine illustrated there are three of these magnets on each side of the machine, making six altogether. Obviously the number may be changed to suit conditions. Surrounding the magnets and bearing against the upturned flangesis placed a member 54 of any suitable non-magnetic and preferably non-corrosive metal, the ends of which are held together by means of the bolts 55, as shown in Fig. 2.-

The end rmember15 has an outwardly ex# tending integral iange26 which is threaded. A ring 27 is screwed into this flange and has an oil packing 28 therein bearing against the shaft 1. There is a similar ring 29 secured to a similar flange on.y the member 15 by bolts 34 (see Fig. 3). The ring 29 also n'carries an oil 'packing 28. This end member 15 has four projections 30 vpreferably at 90 apart, which engage the body member 17 of the -generator frame as. shown in Fig. 3.l

The rojections 30are fastened to the member 1 by means of bolts 31. The other end member 16 of the generator has similar projections 32 which are fastened to the member 17 by means of bolts 33.

The end'member 16 has a flange 35 which is provided with an oil packing 28 and which contacts with the'shaft 1. This member is valso-provided with a. ring 36 which is held of the bearing 3 is carried by the member 16.

The polepieces 2O are provided with a slot in which the coils 40 are placed. These poles are also provided with teeth 41. .'The rotor 4 isalso provided with teethy 42, and the ends of the rotpr teeth and the ends of the stator or pole teeth ^are cut concentric with the centerof' the shaft 1, so that upon rotation the ends of these teeth areplaced in very close. relation. The pitch of the stator teeth is the same as the pitch of thel rotor teeth, but the yteeth on..the.opposite sides of the poles are separated from each other a distance equal to an odd multiple of half the pole tooth pitch, so that when the rotor teeth are aligned with the pole teeth on one side of the pole the teeth of the rotor willbe inidway between the teeth on the other side'of the same pole, as clearly shown in F ig. 2. The object of this arrangement is to produce a maximum flux change in the coil with a minimum rotation of the. rotor, the. flux changing from mammum` to m1nimum with arotation equal to a movement of the rotorV through a half tooth pitch.

The turbine has a casing 43 which is car ried by the generator frame. This casing has -a portion 44 which is fastened to the 47. The lturbine runner 5 is held in placeon the shaft 1 by a key 48 and a nut 49 vscrewed on the end of the shaft 1, which nut is held in place by the Cotter-pin 50. vThis runner is provided with turbine buckets 51 and withA an inlet 52 and an exhaust 53 of any well known or desirable design. The fan blades 51' are placed on the turbine wheel vto make it unnecessary to provide a steam packing around the shaft 1. It will be noted that with theconstruction described the turbine' is supported from the generator framework by a thin cylindrical integral web with large openings for-the purpose of maintaining a large Ventilating space between the hot turbine casing and the adjoining bearing and generator, with a small heat conducting path through the support.

The governor for the turbine is placed on the other end of the shaft 1. This governor` hasl a member 6 which is fastened to and rotates with the shaft 1. Mounted in the member 6 iS a valve member 56 which is arranged in axial alignment with the shaft 1. :This member 5.6 is carried at one end by a member. 57, which is mounted in the member 6 and which is so mounted as to have longitudinal'movement relative thereto. The member 6 also Ycarries a suitable number of centrifugal elements 58, there being three in the governor shown. Mounted on the end of the member 6 is a member 59, the same being screw-threaded into the member 6. Outside of the member 59 is va disk 60 .which is secured to the end of the member 6 by means of bolts 61. The member'59 has a chambered interior in which is placed a spiral spring 63, the same surrounding the valve member 56 and having its other end placed in a chambe'red recess in the member 57. The member 59 is rigid with respect to the member 6, .whereas the member 57 is so arranged as to` permit of longitudinal movementj; with respect to the member 6. The centrifugal members 58 are fulcrumed at 62 so that as the speed of the shaft 1 increases, the 7straight ends of the member 58 fly outwardly and the "curved ends will move in a clockwise direc.`

ti/pn thereby pressing against the member 1 5i' andrompressing the spring 63 .causing the valve member 56 to move to the left.

operates with steam inlet ports 64 and 65.`

On the very end ofy the 4member 56 is av button 66Y which cooperates with the port 64 to control the steamv `flow therethrough; This button 66 is connected with the other part ofthe member'56 by a reducedneck portion 67. The portion 68 of the member 56 cooperates with the port 65 to control the flowV of steam through that porn- Surrounding the parts above-.described is a casing 69 which is` fastened onto the generator frame member 16 by means of bolts 70. Between this frame 69 and the member 16 maybe placed a shim for adjusting the relation of the Valves to the steam ports. The frame 69 is machined sothat it snugly fits within ^the projection 71 on the member 16 and when the bolts 70 are screwed up the frame is held rigidly in position. The frame 69 carries at its outer extremity the steam inlet 72 and lthe steam outlet 73, through which 'the steam supplied to the turbine passes. A This frame also carries a steam packing 74 which surrounds the member 56 to prevent the leakage of steam into the governor.

Surrounding the frame 69 is a non-corrosive metal band 75, the same being held in lace byvbolts 76. l

romthe foregoing description and the attached I drawings, it is believed that a clear understanding of our invention will be obtained. Obviously man detail changes made be made in the units t emselves or in the specific manner in which the various units are combined without departing from the spirit of our invention. We, therefore, do not desireto be limited by the exact details shown and described.

Having fully described Iour invention, what we claim as new and desire to secure by Letters Patent is: y

1. The, combination of an electricfgenerator, with its driving shaft a turbine driving the shaft and a centrifugal governor withits valve for regulating the turbine, the. gen` erator being provided with a frameworkasupporting all three units, the. turbine runner being rigidly connected to the shaft on one side of the generator, and the centrifugal governor bein ildirectely connected to the shaft on the ot er side o f the generator,and said shaft having only two sets of bearings, one set between the turbine and generator and the other set between the centrifugal governor and valve and the generator.

2. The combination of an electric genera tor, with its driving shaft, a turbine driving the shaft and a centrifugal governor-with its valve for regulating the turbine, the generator-being provided with a framework supporting allV three units, the turbine runner lbeing ri idly connected tothe shaft on one side of t e generator, and-said shaft having only two sets of bearings, one set between the turbine and generator` and the" other set between .the centrifugal governor and valve andthe generator, a removable'housing for the turbine supported by the generator framework and a removable housing for the governor also supported directly by. the generator framework, said last mentloned housing carrying the governor valve.

3. The combination of an electric generator, with its driving shaft, a turbine driving the shaft and a centrifugal governor with its valve forregulating the turbine, the generator being provided with a framework supportingall three units, the turbine runner being rigidly connected to the shaft on one side of the generator, and the centrifugal governor being directly connected to theV shaft onthe other s ide of the generator, and said shaft having only two sets of bearings,` one set between the turbine and generator and the other setabetween the centrifugal governor and valve and the enerator, a re4 movable housing for the tur ine supported by the generator framework anda removable housing for the governor also supported directly by the generator framework, said last mentioned 'housing carrying the governor valve, and a conduit for the fluid medium for driving the turbine, said conduit extending from the governor housing at one end of the apparatus to the turbine'housing at the other end of the apparatus.

4. The combination of an electric generator, with its driving shaft, a turbine driving' the shaft and a centrifugal governor with its valve for regulating the turbine, the generator being provided with a framework supporting all three units, the turbine runner being rigidly connected to the shaft on one side of the generator,'and the centrifugal governor being dire'ctl connected to the shaft onthe other sideo the generator, and said shaft having only two sets of bearings, 'one set between the turbine and generator and the other set between the centrifugal governor and valve and the generator, said generator framework having end vmembers constituting the bearing housings, and removable housings for theturbin and the governor, secured respectively to the outer faces of saidI end members, said end mem- `bers and housings having interlockingconcentriccoacting seating surfaces.

5. The combination of an electric generator, with its driving shaft', a turbine driving the shaft andA a centrifugal governor with its valve for regulating the turbine, the generator beine provided Witha framework supporting all three units, runner being rigidly connected to the shaft on one side of the generator, and the centrifugal governor being directly connected to the shaft on the other side of the generator, and said shaft having only two sets .of bearings, one set between the turbine and generator and the other set between the centrif the turbine.

ugal governor and Valve and the generator, tion of said casing and to provide a comand a casing for the turbine having a thin paratively small vmetallic heat conducting cylindrical web portion integrall therewith path between the same. lo secured to one end of said framework, ar- In testimony whereof, we have signed our 5 ranged to position ,the turbine away from the names to this specification. n

adjacent bearing', with a large Ventilating WILLIAM F. BOUCHE. Space between the bearing and the body por- ELI J. BLAKE. 

